/* =====================================================================
   ARTICLE / INSIGHT READING PAGE
   Editorial reading layout for individual Insights articles.
   Loaded after styles.css on insights/*.html pages.
   ===================================================================== */

.article-page {
  background: var(--vrb-white);
}

/* ---- Article hero (navy band, like subpage-hero but editorial) ---- */
.article-hero {
  background: var(--vrb-navy);
  color: var(--vrb-white);
  padding: 48px 0 44px;
  position: relative;
  overflow: hidden;
}
.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg, transparent, transparent 7px,
    rgba(255, 255, 255, 0.025) 7px, rgba(255, 255, 255, 0.025) 8px);
  pointer-events: none;
}
.article-hero-inner {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}
.article-breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.article-breadcrumbs a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}
.article-breadcrumbs a:hover { color: var(--vrb-white); }
.article-breadcrumbs .sep { opacity: 0.4; }

.article-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vrb-white);
  background: var(--vrb-blue);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}
.article-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 50px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  color: var(--vrb-white);
  text-wrap: balance;
}
.article-deck {
  font-size: 20px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.8);
  max-width: 680px;
  margin: 0 0 26px;
}
.article-byline {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  padding-top: 20px;
}
.article-byline-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--vrb-ink-700);
}
.article-byline-text { line-height: 1.4; }
.article-byline-text .name {
  font-weight: 700;
  color: var(--vrb-white);
  font-size: 15px;
}
.article-byline-text .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.55);
}

/* ---- Article body ---- */
.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 24px;
}
.article-lead-figure {
  margin: 0 auto 48px;
  max-width: 720px;
}
.article-lead-figure img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--vrb-ink-200);
  display: block;
}
.article-lead-figure figcaption {
  font-size: 13px;
  font-style: italic;
  color: var(--vrb-ink-500);
  margin-top: 10px;
  line-height: 1.5;
}

.article-prose {
  font-family: var(--font-sans);
  color: var(--vrb-ink-800);
  font-size: 18px;
  line-height: 1.72;
}
.article-prose > p { margin: 0 0 24px; }
.article-prose > p:first-of-type::first-letter {
  /* subtle, institutional — no oversized dropcap */
  font-weight: 700;
}
.article-prose h2 {
  font-family: var(--font-display);
  font-size: 27px;
  line-height: 1.25;
  color: var(--vrb-navy);
  font-weight: 700;
  margin: 48px 0 18px;
  padding-top: 8px;
  letter-spacing: -0.01em;
}
.article-prose h3 {
  font-family: var(--font-sans);
  font-size: 19px;
  font-weight: 700;
  color: var(--vrb-navy);
  margin: 32px 0 12px;
}
.article-prose a {
  color: var(--fg-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--vrb-light-blue);
  transition: text-decoration-color var(--dur-fast) var(--ease-standard);
}
.article-prose a:hover { text-decoration-color: var(--fg-link); }
.article-prose strong { color: var(--vrb-navy); font-weight: 700; }
.article-prose ul, .article-prose ol {
  margin: 0 0 24px;
  padding-left: 24px;
}
.article-prose li { margin-bottom: 10px; }
.article-prose li::marker { color: var(--vrb-blue); }

/* Pull quote */
.article-pullquote {
  margin: 40px 0;
  padding: 4px 0 4px 28px;
  border-left: var(--rule-brand);
  font-family: var(--font-display);
  font-size: 25px;
  line-height: 1.4;
  color: var(--vrb-navy);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Key-stats strip inside article */
.article-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--vrb-ink-200);
  border: 1px solid var(--vrb-ink-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 40px 0;
}
.article-stats .cell {
  background: var(--vrb-white);
  padding: 24px 22px;
}
.article-stats .v {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--vrb-navy);
  line-height: 1;
  margin-bottom: 8px;
}
.article-stats .k {
  font-size: 13px;
  line-height: 1.45;
  color: var(--vrb-ink-500);
}

/* Inline data table */
.article-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 15px;
}
.article-prose thead th {
  background: var(--bg-header-navy);
  color: var(--fg-on-navy);
  text-align: left;
  padding: 11px 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 700;
}
.article-prose tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--vrb-ink-200);
}
.article-prose tbody tr:nth-child(even) td { background: var(--bg-alt-row); }
.article-prose td.num, .article-prose th.num {
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Footnote / disclosure callout */
.article-note {
  background: var(--bg-section);
  border: 1px solid var(--vrb-ink-200);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--vrb-ink-700);
  margin: 36px 0;
}
.article-note .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vrb-blue);
  margin-bottom: 8px;
}

/* Section divider */
.article-rule {
  border: 0;
  border-top: 1px solid var(--vrb-ink-200);
  margin: 48px 0;
}

/* Sources & methodology */
.article-sources {
  max-width: 720px;
  margin: 44px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--vrb-ink-200);
}
.article-sources .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vrb-blue);
  margin-bottom: 14px;
}
.article-sources ol {
  margin: 0;
  padding-left: 20px;
  list-style: decimal;
}
.article-sources li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--vrb-ink-700);
  margin-bottom: 12px;
}
.article-sources li::marker { color: var(--vrb-blue); font-family: var(--font-mono); }
.article-sources strong { color: var(--vrb-navy); font-weight: 700; }
.article-sources em { font-style: italic; }
.article-sources-note {
  font-size: 12.5px;
  font-style: italic;
  line-height: 1.55;
  color: var(--vrb-ink-500);
  margin: 16px 0 0;
}

/* ---- Author bio ---- */
.article-author {
  max-width: 720px;
  margin: 48px auto 0;
  padding: 28px 0 0;
  border-top: var(--rule-brand);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.article-author img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.article-author .name {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--vrb-navy);
  font-weight: 700;
}
.article-author .role {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--vrb-ink-500);
  margin: 2px 0 10px;
}
.article-author p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--vrb-ink-700);
  margin: 0;
}

/* ---- Conversion CTA ---- */
.article-cta {
  background: var(--vrb-navy);
  color: var(--vrb-white);
  border-radius: var(--radius-lg);
  padding: 44px 44px;
  max-width: 720px;
  margin: 56px auto 0;
  text-align: center;
}
.article-cta h3 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--vrb-white);
}
.article-cta p {
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 auto 24px;
  max-width: 480px;
}

/* ---- Related articles ---- */
.article-related {
  max-width: 1100px;
  margin: 80px auto 0;
  padding: 0 24px;
}
.article-related .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vrb-blue);
  margin-bottom: 8px;
}
.article-related h2 {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--vrb-navy);
  font-weight: 700;
  margin: 0 0 28px;
}
.article-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-related-card {
  display: block;
  text-decoration: none;
  border: 1px solid var(--vrb-ink-200);
  border-radius: var(--radius-md);
  padding: 24px;
  background: var(--vrb-white);
  transition: box-shadow var(--dur-base) var(--ease-standard),
    transform var(--dur-base) var(--ease-standard);
}
.article-related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.article-related-card .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--vrb-blue);
}
.article-related-card .title {
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.3;
  color: var(--vrb-navy);
  font-weight: 700;
  margin: 10px 0 0;
}

/* Caution variant for article-note */
.article-note.article-note--caution {
  background: #FFF8F7;
  border-color: #D9534F;
}
.article-note.article-note--caution .label {
  color: #C0392B;
}

/* Comparison table cell states */
.article-prose td.td-pro { color: #1F6B35; font-weight: 600; }
.article-prose td.td-con { color: #9B2B22; font-weight: 600; }
.article-prose td.td-neutral { color: #1A5A82; font-weight: 600; }
.article-table-note {
  font-size: 13px;
  color: var(--vrb-ink-500);
  font-style: italic;
  margin-top: -20px;
  margin-bottom: 32px;
  line-height: 1.5;
}

/* ---- Term definition grid ---- */
.article-term-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0 32px;
}
.article-term-card {
  background: var(--bg-alt-row);
  border: 1px solid var(--vrb-ink-200);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}
.article-term-card .term-name {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--vrb-navy);
  margin-bottom: 6px;
}
.article-term-card .term-def {
  font-size: 13px;
  color: var(--vrb-ink-700);
  line-height: 1.55;
}
@media (max-width: 640px) {
  .article-term-grid { grid-template-columns: 1fr; }
}

/* ---- In-article diagram figures ---- */
.article-figure {
  margin: 40px 0;
}
.article-figure svg {
  display: block;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
}
.article-figure figcaption {
  font-size: 12px;
  font-style: italic;
  color: var(--vrb-ink-500);
  text-align: center;
  margin-top: 10px;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

/* ---- In-brief summary box ---- */
.article-brief {
  background: var(--bg-alt-row);
  border: 1px solid var(--vrb-ink-200);
  border-left: 3px solid var(--vrb-navy);
  border-radius: var(--radius-md);
  padding: 22px 24px 18px;
  margin: 0 0 40px;
}
.article-brief .label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vrb-navy);
  font-weight: 700;
  margin-bottom: 14px;
}
.article-brief ul {
  margin: 0;
  padding-left: 18px;
  list-style: disc;
}
.article-brief li {
  font-size: 15px;
  line-height: 1.55;
  color: var(--vrb-ink-800);
  margin-bottom: 8px;
}
.article-brief li:last-child { margin-bottom: 0; }
.article-brief li::marker { color: var(--vrb-navy); }
.article-brief strong { color: var(--vrb-navy); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .article-hero { padding: 96px 0 44px; }
  .article-body { padding: 44px 20px 16px; }
  .article-prose { font-size: 17px; }
  .article-stats { grid-template-columns: 1fr; }
  .article-cta { padding: 32px 24px; }
  .article-related-grid { grid-template-columns: 1fr; }
  .article-pullquote { font-size: 21px; }
  /* Tables scroll horizontally on narrow screens */
  .article-prose table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  .article-prose table td,
  .article-prose table th { white-space: normal; min-width: 120px; }
  /* Author bio stacks vertically */
  .article-author { flex-direction: column; gap: 14px; }
}